Slide-gate.



. R. O. FORGE.

SLIDE GATE.

APPLICATION FILED MAIL2, 1912.

, Patented Fb.25,1913.

RAYMOND CHARLES FORCE, OF LOS ANGEL CORRUGATED CULVERT COMPANY, OFCALIFORNIA.

ES, CALIFORNIA, AS SIGNOR T0 CALIFORNIA OAKLAND, CALIFORNIA, ACORPORATION OF SLIDE-GATE.

To all whom it may concern Be'it known that I, RAYMOND CHARLES F once, acitizen of the United States,-residing at Los Angeles, in the county ofLos Angeles and State of California, have invented certain new anduseful Improvements in Slide-Gates, of which the following is'aspecification.

' invention relates to the class of slidegates, and is adapted for usein connection with any fluid pipe, and especially with pipes usedinirrigation systems. i

Y nature, here shown ient form in cross section,

- The main object of my invention is to pro vide a gate which will becheap, simple and durable and not liable to get out of order; one whichwill effectually guard against leakage and will close freely under allconditions.

To this end my invention consists in the novel gate which I shallhereinafter fully describe by reference to the accompanying drawings, inwhich- Figure 1 is a side view and part section of my gate as attachedto a corrugated metal pipe. Fig. 2 is an end view of the same partly insection. Fig. 3 is a side view, partly in section, showing amodification of the gate seat.

For convenience the gate is shown in partly opened position.

The slide 1 which forms the gate is provided with a lifting device ofany suitable as a-handle 3. 2 is provided with a cross-slot 4: withanopening just sufficient to receive the slide 1. This slot extends fromthe oint 5 to the point 6, shown in Fig. 2; or, in other words, thelength of the slot is equal to the half of the circumference of the pipe2.

In shape the pipe may have any convensuch as square, oval or polygonal.The slide 1 is sha ed so as to fit the lower'half of the pipe; that is,if the pipe is circular, as-here shown, the lower partof the slide ismade a semi-circle, as shown in Fig. 2.

The seat for the slide may be constructed in various ways having in viewthe provision of a tight bearing surface between the pipe and slide.

For example, in Fig. 3 I show a reinforclng ring 12 fitted to theinterior of the pipe, said ring having a slot 13 above, registering withthe slot 4 in the pipe and a groove'le below in which saidslot andgroove the slide 1 may operate and find a Specification of LettersPatent.

Application filed. March 2, 1912.

The pipe- Patented Feb. 25, 1913. Serial No. 681,213. I

seat. In this case the slot 13 and groove 14 may be properly machined inorder to make a tight fit. But I prefer to make the seat for theslide-gate as I show in Figs. 1 and 2, as in such case I can get thenecessary tight fit without machine work, and this construction is forthis reason metal pipes. Furthermore, as machine finishing is a ratherexpensive a perfect fit, my preferred construction of seat is ofeconomical advantage.

7 and 8 in Fig.1 are rings of any suitable yielding or resilientcomposition enabling them to act as packings. these rings in contactwith the whole circumference, a conical. or sloping recess is providedall along the inside of the circui'nference of the pipe. In corrugatedpipes, one of the corrugations, as shown at 15, acts as such a recess aswill be plainly understood from F 1.

9 and 10, Fig. 1, represent metal springs which are formed with adiameter somewhat larger than the diameter of the recess 15 and wheninserted in the recess will press against the pipe and tend to slidetoward the middle of said recess, thus assisting rings 7 and S to pressagainst slide 1. i The pressure of the rings against the side willalways be sutiicient to hold said slide in any position desired withoutother clamping de vice. \Vhen the slide is pulled out, the packing rings7 and 8 will slide in' toward the middle of the recess and press againsteach other, thus covering the slot and preventing any leakage throughsaid slot. The edges of the semi-circular portion of the slide 1 arerounded so as to prevent said slide from cutting into or in any wayinjuring the packing rings, butgently tend to spread said rings closedposition.

Where comparatively light metal is used, it may be required to' providesaid pipe with one ormore reinforcing members and placed in accordancewith requirements."

11, in Fig. 1, represents a bertain kind of well adapted for sheet wayof making the pack ix 1g reinforcing member which in this case isa metalband formed to fit the outside of the pipe and fastened by means ofrivets.

Having thus described my invention what Iclaim as new and desire tosecure by Letters Patent is- 1. In a slide-gate for pipes, thecombination of a circumferenlially corrugated pipe having in the apex ofone of its ridges a cross-slot and a gate adapted to slide in said slotand to traverse the cross-sectional area of the pipes interior in theplane of the slot, to close and open the pipe.

2. In a slide-gate for pipes, the combination of a circumferentiallycorrugated pipe having a cross-slot in the apex 0t one of its ridges, agate, adapted to slide in said slot to close and open the pipe, andmembers fitted within the pi-pe in the slotted valley thereof andbearing on the gate to form a seat therefor.

3. In a slide-gate for pipes, the combination of a circumferentiallycorrugated pipe having a cross-slot in the apex of one of its ridges, agate adapted to slide in said slot to close and open the pipe, memberswithin the pipe in the slotted valley thereof and yieldingly bearing onthe gate to form a seat therefor.

4:. In a slide-gate for pipes, the combination of a circumferentiallycorrugated pipe having a cross-slot in the apex of one of its ridges, agate adapted to slide in said slot to close and open the pipe, ringsfitted movably within the pipe, in the slotted valley thereof andbearing on the gate to form a seat therefor, and spring members forholding the movable rings to their pressure on the gate.

'5. In a slide-gate for pipes, the combina tion of a pipe having acloss-slot, said pipe having on its inner surfaces an encircling recessthe walls of which slope to said cross slot, a gate adapted to slide insaid slot to close and open the pipe, and rings fitted movably withinthe sloping recess of the pipe and bearing on the gate to form a seattherefor. I

(3. In a slide-gate for pipes, the combination of a pipe having across-slot, said pipe having on its inner surface an encircling recessthe walls of which slope to said crossslot, a gate adapted to slide insaid slot to close and open the pipe, rings fitted movably within thesloping recess of the pipe and bearing on the gate to form a seattherefor, and springmembers to hold said movable rings to their pressureon the gate.

7. In a slide-gate for pipes, the combination of a pipe having across-slot, said pipe having on its inner surface an encircling recessthe walls ofwhich slope to said cross slot, a gate adapted to slide insaid slot to close and open the pipe, rings fitted 1nov ably within thesloping recess of the pipe and. bearing on the gate to form a seattherefor, and springs members to hold said movable rings to theirpressure on the gate, said spring members being rings seated. undercompression in the sloping recess of the pipe and bearing against saidmovable seatrlngs.

S. In a slide-gate for pipes, the combination of a circumferentiallycorrugated pipe having in the apex of one of its ridges a cross-slot, agate adapted to slide in said slot to' close and open the pipe, movablywithin the pipe in the slotted valley on its inner surface and bearingon the gate to form a seat therefor, and spring rings seated in saidvalley of the pipe under compression and bearing on the movableseat-rings to hold them to their pressure on the gate.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

RAYMOND CHARLES FORCE.

\Vitnesses A. P. FULCHER,

J. M. FULOHER.

Copies of this patent may be obtained for five cents each; by addressingthe Commissioner of Patents,

Washington, D. C.

rings fitted

